135764421 has 8 divisors (see below), whose sum is σ = 194943840. Its totient is φ = 83547312.

The previous prime is 135764417. The next prime is 135764437. The reversal of 135764421 is 124467531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135764421 - 2² = 135764417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135764411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740531 + ... + 1740608.

It is an arithmetic number, because the mean of its divisors is an integer number (24367980).

Almost surely, 2^135764421 is an apocalyptic number.

It is an amenable number.

135764421 is a deficient number, since it is larger than the sum of its proper divisors (59179419).

135764421 is a wasteful number, since it uses less digits than its factorization.

135764421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481155.

The product of its digits is 20160, while the sum is 33.

The square root of 135764421 is about 11651.7990456410. The cubic root of 135764421 is about 513.9592151724.

The spelling of 135764421 in words is "one hundred thirty-five million, seven hundred sixty-four thousand, four hundred twenty-one".